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A reversible prime in any number system is a prime whose "reverse" in that number system is also a prime. For example in the decimal system 73 is a re 阅读全文
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//转自:https://blog.csdn.net/apie_czx/article/details/45537627 1014 Waiting in Line (30)（30 分）Suppose a bank has N windows open for service. There is a 阅读全文
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It is vitally important to have all the cities connected by highways in a war. If a city is occupied by the enemy, all the highways from/toward that c 阅读全文
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To evaluate the performance of our first year CS majored students, we consider their grades of three courses only: C - C Programming Language, M - Mat 阅读全文
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With the 2010 FIFA World Cup running, football fans the world over were becoming increasingly excited as the best players from the best teams doing ba 阅读全文
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Given a pair of positive integers, for example, 6 and 110, can this equation 6 = 110 be true? The answer is "yes", if 6 is a decimal number and 110 is 阅读全文
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This time, you are supposed to find A*B where A and B are two polynomials. Input Specification: Each input file contains one test case. Each case occu 阅读全文
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转自:https://www.jianshu.com/p/c7e642877b0e 梯度下降法，思想及代码解读。 import numpy as np # Size of the points dataset. m = 20 # Points x-coordinate and dummy value 阅读全文
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Given a sequence of K integers { N~1~, N~2~, ..., N~K~ }. A continuous subsequence is defined to be { N~i~, N~i+1~, ..., N~j~ } where 1 <= i <= j <= K 阅读全文
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At the beginning of every day, the first person who signs in the computer room will unlock the door, and the last one who signs out will lock the door 阅读全文